SemiSpace Class Reference

#include <spaces.h>

Inheritance diagram for SemiSpace:

Collaboration diagram for SemiSpace:

Public Member Functions
	SemiSpace (Heap *heap, SemiSpaceId semispace)
void	SetUp (Address start, int initial_capacity, int maximum_capacity)
void	TearDown ()
bool	HasBeenSetUp ()
bool	GrowTo (int new_capacity)
bool	ShrinkTo (int new_capacity)
Address	space_start ()
Address	page_low ()
Address	space_end ()
Address	page_high ()
bool	AdvancePage ()
void	Reset ()
Address	age_mark ()
void	set_age_mark (Address mark)
bool	Contains (Address a)
bool	Contains (Object *o)
virtual intptr_t	Size ()
virtual bool	ReserveSpace (int bytes)
bool	is_committed ()
bool	Commit ()
bool	Uncommit ()
NewSpacePage *	first_page ()
NewSpacePage *	current_page ()
int	Capacity ()
int	MaximumCapacity ()
int	InitialCapacity ()
SemiSpaceId	id ()
Public Member Functions inherited from Space
	Space (Heap *heap, AllocationSpace id, Executability executable)
virtual	~Space ()
Heap *	heap () const
Executability	executable ()
AllocationSpace	identity ()
virtual intptr_t	SizeOfObjects ()
virtual int	RoundSizeDownToObjectAlignment (int size)
Public Member Functions inherited from Malloced
void *	operator new (size_t size)
void	operator delete (void *p)

Static Public Member Functions
static void	AssertValidRange (Address from, Address to)
static void	Swap (SemiSpace *from, SemiSpace *to)
Static Public Member Functions inherited from Malloced
static void	FatalProcessOutOfMemory ()
static void *	New (size_t size)
static void	Delete (void *p)

Friends
class	SemiSpaceIterator
class	NewSpacePageIterator

Detailed Description

Definition at line 1838 of file spaces.h.

Constructor & Destructor Documentation

SemiSpace ( Heap *  heap, SemiSpaceId  semispace  )

inline

Definition at line 1841 of file spaces.h.

Member Function Documentation

bool AdvancePage ( )

inline

Definition at line 1890 of file spaces.h.

References NewSpacePage::next_page().

Referenced by NewSpace::AddFreshPage().

Address age_mark ( )

inline

Definition at line 1901 of file spaces.h.

Referenced by NewSpace::age_mark().

static void AssertValidRange ( Address  from, Address  to  )

inlinestatic

Definition at line 1948 of file spaces.h.

Referenced by PromotionQueue::insert(), and PromotionQueue::remove().

int Capacity ( )

inline

Definition at line 1952 of file spaces.h.

Referenced by NewSpace::Capacity(), NewSpace::EffectiveCapacity(), NewSpace::Grow(), and NewSpace::Shrink().

bool Commit

(

)

Definition at line 1351 of file spaces.cc.

References ASSERT, Space::executable(), Space::heap(), MemoryChunk::InsertAfter(), SemiSpace::is_committed(), Page::kPageSize, and SemiSpace::Reset().

Referenced by NewSpace::CommitFromSpaceIfNeeded(), SemiSpace::GrowTo(), and NewSpace::SetUp().

bool Contains ( Address  a )

inline

Definition at line 1906 of file spaces.h.

Referenced by NewSpace::FromSpaceContains(), and NewSpace::ToSpaceContains().

bool Contains ( Object *  o )

inline

Definition at line 1913 of file spaces.h.

NewSpacePage* current_page ( )

inline

Definition at line 1934 of file spaces.h.

Referenced by PromotionQueue::ActivateGuardIfOnTheSamePage(), SemiSpace::Swap(), and NewSpace::top().

NewSpacePage* first_page ( )

inline

Definition at line 1933 of file spaces.h.

References NewSpacePage::next_page().

Referenced by SemiSpace::ShrinkTo().

bool GrowTo

(

int

new_capacity

)

Definition at line 1390 of file spaces.cc.

References OS::AllocateAlignment(), ASSERT, Bitmap::Clear(), SemiSpace::Commit(), Space::executable(), MemoryChunk::GetFlags(), Space::heap(), MemoryChunk::InsertAfter(), SemiSpace::is_committed(), v8::internal::IsAligned(), NewSpacePage::kCopyOnFlipFlagsMask, Page::kPageAlignmentMask, Page::kPageSize, NewSpacePage::prev_page(), and MemoryChunk::SetFlags().

Referenced by NewSpace::Grow(), and NewSpace::Shrink().

bool HasBeenSetUp ( )

inline

Definition at line 1857 of file spaces.h.

References v8::internal::NULL.

Referenced by NewSpace::HasBeenSetUp().

SemiSpaceId id ( )

inline

Definition at line 1960 of file spaces.h.

int InitialCapacity ( )

inline

Definition at line 1958 of file spaces.h.

Referenced by NewSpace::InitialCapacity().

bool is_committed ( )

inline

Definition at line 1929 of file spaces.h.

Referenced by SemiSpace::Commit(), NewSpace::CommitFromSpaceIfNeeded(), NewSpace::CommittedMemory(), SemiSpace::GrowTo(), NewSpace::SetUp(), SemiSpace::ShrinkTo(), SemiSpace::Uncommit(), and NewSpace::UncommitFromSpace().

int MaximumCapacity ( )

inline

Definition at line 1955 of file spaces.h.

Referenced by NewSpace::MaximumCapacity().

Address page_high ( )

inline

Definition at line 1886 of file spaces.h.

References MemoryChunk::area_end().

Referenced by NewSpace::FromSpacePageHigh(), NewSpace::LowerInlineAllocationLimit(), and NewSpace::Shrink().

Address page_low ( )

inline

Definition at line 1876 of file spaces.h.

References MemoryChunk::area_start().

Referenced by NewSpace::FromSpacePageLow(), and NewSpace::Size().

virtual bool ReserveSpace ( int  bytes )

inlinevirtual

Definition at line 1924 of file spaces.h.

References UNREACHABLE.

void Reset

(

)

Definition at line 1490 of file spaces.cc.

References ASSERT, and NewSpacePage::next_page().

Referenced by SemiSpace::Commit(), NewSpace::ResetAllocationInfo(), and NewSpace::Shrink().

void set_age_mark

(

Address

mark

)

Definition at line 1517 of file spaces.cc.

References ASSERT, NewSpacePage::FromLimit(), MemoryChunk::NEW_SPACE_BELOW_AGE_MARK, SemiSpace::NewSpacePageIterator, and SemiSpace::space_start().

Referenced by NewSpace::set_age_mark().

void SetUp	(	Address	start,
		int	initial_capacity,
		int	maximum_capacity
	)

Definition at line 1323 of file spaces.cc.

References ASSERT, v8::internal::kHeapObjectTag, v8::internal::kHeapObjectTagMask, and v8::internal::RoundDown().

Referenced by NewSpace::SetUp().

bool ShrinkTo

(

int

new_capacity

)

Definition at line 1428 of file spaces.cc.

References OS::AllocateAlignment(), ASSERT, SemiSpace::first_page(), NewSpacePage::FromAddress(), Space::heap(), SemiSpace::is_committed(), v8::internal::IsAligned(), Heap::isolate(), Page::kPageAlignmentMask, Page::kPageSize, Isolate::memory_allocator(), NewSpacePage::set_next_page(), NewSpacePage::set_prev_page(), SemiSpace::space_end(), and MemoryAllocator::UncommitBlock().

Referenced by NewSpace::Grow(), and NewSpace::Shrink().

virtual intptr_t Size ( )

inlinevirtual

Implements Space.

Definition at line 1919 of file spaces.h.

References UNREACHABLE.

Address space_end ( )

inline

Definition at line 1881 of file spaces.h.

References MemoryChunk::area_end(), and NewSpacePage::prev_page().

Referenced by NewSpace::FromSpaceEnd(), SemiSpace::ShrinkTo(), and NewSpace::ToSpaceEnd().

Address space_start ( )

inline

Definition at line 1870 of file spaces.h.

References MemoryChunk::area_start(), ASSERT, and NewSpacePage::next_page().

Referenced by NewSpace::bottom(), NewSpace::FromSpaceStart(), SemiSpace::set_age_mark(), and NewSpace::ToSpaceStart().

void Swap ( SemiSpace *  from, SemiSpace *  to  )

static

Definition at line 1496 of file spaces.cc.

References ASSERT, SemiSpace::current_page(), MemoryChunk::GetFlags(), NewSpacePage::kCopyOnFlipFlagsMask, and NewSpacePage::next_page().

Referenced by NewSpace::Flip().

void TearDown

(

)

Definition at line 1345 of file spaces.cc.

References v8::internal::NULL.

Referenced by NewSpace::TearDown().

bool Uncommit

(

)

Definition at line 1376 of file spaces.cc.

References ASSERT, Space::heap(), SemiSpace::is_committed(), NewSpacePage::set_next_page(), and NewSpacePage::set_prev_page().

Referenced by NewSpace::UncommitFromSpace().

Friends And Related Function Documentation

friend class NewSpacePageIterator

friend

Definition at line 1993 of file spaces.h.

Referenced by SemiSpace::set_age_mark().

friend class SemiSpaceIterator

friend

Definition at line 1992 of file spaces.h.

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The documentation for this class was generated from the following files:

• src/spaces.h
• src/spaces.cc